John L. Campbell No. 1 dam
John L. Campbell No. 1
John L. Campbell No. 1 is a private irrigation dam located in Carbon County, Wyoming, along the Indian Creek. Built in 1912, this earth dam stands at 18 feet high and has a storage capacity of 56 acre-feet. Despite its age, the dam is still in use for irrigation purposes, with a valve outlet gate for water control.
Although classified as having a low hazard potential, the dam's condition assessment is poor, indicating a need for maintenance and potential upgrades to ensure its continued safety and functionality. The dam has a moderate risk rating, with a history of inspections dating back to July 2021. With a spillway width of 30 feet, the dam is designed to handle uncontrolled spillage during high water events.
This historic dam serves as a crucial water resource for the surrounding area, highlighting the importance of ongoing monitoring and maintenance to protect both the dam and downstream communities from potential risks. Enthusiasts of water resources and climate change will find John L. Campbell No. 1 to be a fascinating case study in the intersection of infrastructure, environment, and sustainability.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around John L. Campbell No. 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sweetwater River Near Alcova | 27 cfs | → |
| Medicine Bow R Ab Seminoe Reservoir | 38 cfs | → |
| N Platte Riv Ab Seminoe Reservoir | 1,640 cfs | → |
| L Medicine Bow R At Boles Spring | 10 cfs | → |
| Deer Creek In Canyon | 60 cfs | → |
| Box Elder Creek At Boxelder | 26 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near John L. Campbell No. 1.
Boat launches
- Natrona County
- Gray Reef Road Natrona County
- Ledge Creek Boat Stopoff
- Trapper Route Road Natrona County
- Shiners Point Road Carbon County
- Miles Landing Boat Ramp 1
Campgrounds
- Kortes Reservoir Miracle Mile Dispersed
- Prior Flat Campsite 1
- Prior Flat Campsite 2
- Prior Flat Campsite 3
- Prior Flat
- Weiss - Pathfinder Lake
Track John L. Campbell No. 1 in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About John L. Campbell No. 1
Where does the data for John L. Campbell No. 1 come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of John L. Campbell No. 1.